I'd imagine someone from SE will just synonymize the tags when the new review is officially out of beta.
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YannisOct 17 '12 at 21:23

I would have thought the review-beta tag would stay, so that people could differentiate between stuff asked during the different phases - IOW people can clearly see which version of the review a question relates to.
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slugsterOct 17 '12 at 21:45

@slugster Well, when the new review becomes the only review, I'd imagine several of the then obsolete Meta posts about the old review will disappear gently into the night...
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YannisOct 17 '12 at 21:47